Alright, I think I've figured out which Nijigasaki URs are coming next.

As I stated in my last post, Kanata and Rina will be Fes cards as they match Nico and Yoshiko.

Kasumi and Ai will be Gacha cards. I think that Kasumi will come next because her card gives of a spring vibe and it is almost spring time. After the pick up gacha, I think that Ai's card will come out. They could come out in the opposite order but that's my guess.

For the Fes cards, I am thinking that they will come out at the same time. I'm guessing that there will be 4 fes cards for the 4th round of fes cards. This is because both You and Maki still need a match and Rina and Kanata match Yohane and Nico. I don't think that they would continue releaseing the Nijigaku URs into another event. I think it would be easier for them to simply just wrap up the release of the first round of Nijigasaki URs in the last fes rather than continue into another round of events. As they have showed us with this current fes, they aren't afraid to release more or less than the standard amount of cards during a fes.

I'm not sure if my assumptions are correct but that ok lol. They're just educated guesses. I can't wait for Rina's UR! I've got 6000 Stars saved up! I really hope she comes home!

EDIT: I just saw that Kasumi is the next event gacha card! Very happy that I predicted correctly!